Tag Archives: HiRISE

HiRISE: Geologic history revealed in Valles Marineris

An enhanced-color image reveals bedrock that is several kilometers below the top of the giant Valles Marineris canyons. The upper layers have relatively little diversity of colors and textures, but deeper levels show more complex processes. The upper layers could … Continue reading

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HiRISE: Holden Crater dunes

Holden Crater dunes. 260 km above the surface. Black and white is 5 km across, enhanced color is less than 1 km. Beautiful Mars series.

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HiRISE: Traipsing across Terra Sirenum

Traipsing across Terra Sirenum. Terra Sirenum is named after the Sirens who were birds with the heads of girls. In the Odyssey these girls captured passing seamen and killed them. Let’s hope future human exploration of this region is less … Continue reading

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HiRISE: Diverse composition and stratigraphy in the Claritas Region

Diverse composition and stratigraphy in the Claritas Region. This region, west of Solis Planum, is a tectonic and volcanic area located south-east of the Tharsis volcano group (the Tharsis Montes) on the Tharsis rise. It extends roughly north to south … Continue reading

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HiRISE: Ejecta and possible bedrock on a crater floor in Aonia Terra

Ejecta and possible bedrock on a crater floor in Aonia Terra. This is just to the east of an impact crater that is almost dead center within a much larger impact crater. (249 km above the surface; black and white … Continue reading

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HiRISE: Contact between fluvial units in Aeolis Dorsa

Contact between fluvial units in Aeolis Dorsa. Beautiful Mars series.

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HiRISE: Clays of Ladon Basin

Ladon Basin was a large impact structure that was filled in by the deposits from Ladon Valles, a major ancient river on Mars. These wet sediments were altered into minerals such as various clay minerals. Clays imply chemistry that may … Continue reading

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HiRISE: Eroded layers in Shalbatana Valles

Layers, probably sedimentary in origin, have undergone extensive erosion in this image of Shalbatana Valles, a prominent channel that cuts through Xanthe Terra. This erosion has produced several small mesas and exposed light-toned material that may differ in composition from … Continue reading

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HiRISE: Hexagons in icy terrain

Ground cemented by ice covers the high latitudes of Mars, much as it does in Earth’s cold climates. A common landform that occurs in icy terrain are polygons. Polygonal patterns form by winter cooling and contraction cracking of the frozen … Continue reading

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HiRISE: Dark materials on Olympus Mons

Dark materials on Olympus Mons. There are blocks of layered terrain within the Olympus Mons aureole. The aureole is a giant apron of chaotic material around the volcano, perhaps formed by enormous landslides off the flanks of the giant volcano. … Continue reading

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